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A child throws a ball with an initial speed of 8.00 m/s at an angle of 40.0° above the horizontal. The ball leaves her hand 1.00 m above the ground and experience negligible air resistance. I know how to calculate the velocity before the ball hits the ground, but I don't know how to calculate the angle below the horizontal below which the ball hits the ground.
Consider the arrangement shown in the figure below. Assume R = 4.00 ? and scripted l = 1.40 m, At what speed should the bar be moved
air enters an isentropic turbine at 145 psia and 900f through a 0.52 f2 area with a velocity of 595 fts. it leaves at
n = 4.13 mol of Hydrogen gas is initially at T = 335 K temperature and pi = 1.73×105 Pa pressure. How much entropy did the gas emit
The elementary particle called a muon is unstable and decays after 2.20 ?s, What lifetime do you observe for the muon
In the ground state of the hydrogen atom, the electron has a total energy of -13.6 eV, Determine its potential energy if the electron is a distance 16a from the central nucleus? Here a is the Bohr radius
a beam of light from a monochromatic laser shines into a piece of glass. the glass has thickness l and index of
question a thin rod is pivoted about its center. the rods mass is 5.0 kg and its moment of inertia is 5.4 kg m2. what
At a given point above the surface of Earth, the gravitational acceleration is equal to 7.8 m/s2. At what speed could a satellite be in orbit at this point
A figure skater is spinning with an angular velocity of +13 rad/s. She then comes to a stop over a brief period of time. Determine the time during which she comes to rest
A very light spring of equilibrium length 10.0 cm is hung from the ceiling with a 0.40 kg block at its end. When the block settles, the spring is 15.0 cm long. The same block-and-spring system is then set up horizontally on the floor, with the fr..
A 2 kilogram stone is tied to a thin, light wire wrapped around the outer edge of the uniform 10 kilogram cylindrical pulley. Determine the acceleration of the stone, the tension in the wire, and the angular acceleration of the pulley
A horse pulls a 300 kg wooden sleigh in the snow via a massless rope. The sleigh is towing a 50 kg wooden box behind it via another massless rope. What is the acceleration of the sleigh
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